Sony Walkman D-F20, Руководство по обслуживанию

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D-F20
16 16
5-5. PRINTED WIRING BOARD — MAIN SECTION —
Common Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
f
: internal component.
• : Pattern from the side which enables seeing.
Common Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
• % : indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
• Total current is measured with CD installed.
• Power voltage is dc 4.5 V and fed with regulated dc power
supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground in
playback mode.
no mark : FM
(
) : AM
< > : CD
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
J
: CD
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.
• Semiconductor
Location (Side A)
D1 G-4
D80 H-8
D82 H-8
D301 G-2
D302 G-2
D303 F-2
D304 F-2
D408 H-6
D461 H-6
D801 H-6
IC61 I-6
Q84 H-4
Q85 I-4
Q401 G-9
Q402 G-9
Q403 F-2
Q405 E-2
Q412 I-8
Ref. No. Location
1
A
B
C
D
E
F
G
H
I
J
2 3 4 5 6 7 8 9 10
OPTICAL
PICK-UP
BLOCK
(DAX-23E)
1-681-838-
1 BLK
2 WHT
M502
SPINDLE
MOTOR
S803
HOLD
1 BLK
2 WHT
M501
SLED
MOTOR
OFF ON
RF-IN
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com